I am well acquainted with the IPL-image format used in OpenCV 1.1. However i am using the latest 2.4 version and want to switch to the C++ interface of OpenCV. Here is the method by which i access the ...

I'm trying to access Pixel by Pixel of an IplImage. Im using Java and Processing, and sometimes I need to access pixel by pixel. I've done this so far, but I don't know what's wrong:
public IplImage ...

When I try to use cvCopy a IplImage consisting of 3 channels to a IplImage with 4 channels (I need the extra channel later) all I get is an error message.
Is there another way to increase the channel ...

I am using some code to convert between iplimage and uiimage. I take a photo taken from the camera (a UIImage) and convert it to an iplimage and back using the code posted below. Unfortunately this ...

I'm working with JavaCV at the moment, to try some simple blob detection. I'm using maven and got JavaCV 0.11 (more specific org.bytedeco.javacv) from their repositories. Everything compiles without ...

I want to write data directly into the imageData array of an IplImage, but I can't find a lot of information on how it's formatted. One thing that's particularly troubling me is that, despite creating ...

I am using OpenCV via Matlab to detect faces in a video and then do some processing using Matlab. At the moment I do face detection on the IplImage-structured frames (queried by cvQueryFrame) of the ...

I am using OpenCV to detect faces in several images and then I save the face images(rectangles) to jpg files. But as I have a lot of images, I get the openCV error that I am running out of memory. I ...

I am really confused by using Mat and IplImage objects in OpenCV. I read a lot of questions and answers here but I am still in trouble with these 2 types.
Many times, I need converting them to each ...

I have a program that uses the OpenCV library (version 2.4.1) to capture video from my laptop's webcam (or any other connected camera) and save it to an .avi file. When I debug in Visual Studio 2010, ...

I am getting errors using a NSDictionary when trying to assign it's contents to new variables/objects. Maybe this isn't posible? I thought it would be. I'm also not sure if I can use non-Objective C ...

I am running Python2.7.1 and OpenCV 2.2 without problems in my WinXP laptop and wrote a tracking program that is working without a glitch. But for some strange reason I cannot get the same program to ...

I was wondering if there is a way to force an Image to load as 8U. I saw at the OpenCV Documentation that you can specify whether to load an Image as Single or Three Channel, but nothing is mentioned ...

I have a PNG image with transparent background that is to be added to another image.
My problem is that when I am loading the IplImage the background is not transparent anymore - it turns white.
How ...

First of all, I'm quite new to OpenCV.
I'm trying for about one week without success and it seems like I will never make it. That's why I have to ask for help from someone who faced the same issue.
I ...